#3F3578

#3F3578

Color Values

HEX

#3F3578

RGB

63, 53, 120

HSL

249.0, 38.7%, 33.9%

HSV

249.0, 55.8%, 47.1%

CMYK

47.5%, 55.8%, 0.0%, 52.9%

OKLCH

0.3768 0.1101 286.7

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#3F3578

#6E7835

Analogous

#354C78

#603578

#3F3578

Triadic

#3F3578

#783F35

#35783F

Split Complementary

#3F3578

#786035

#4C7835

Tetradic

#3F3578

#78354C

#6E7835

#357860

Color Blindness Simulation

Original

#3F3578

Protanopia

#3B3B68

Deuteranopia

#3B3C64

Tritanopia

#3E5B58

Achromatopsia

#3C3C3C

CSS Usage

background-color: #3F3578;
color: #3F3578;
border-color: #3F3578;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F6F5FA
100
#E9E7F3
200
#D2CDE9
300
#B1AAD9
400
#877CC5
500
#5D4EB1
600
#4A3F8D
700
#3B3271
800
#2E2758
900
#252041
950
#171429

Contrast Checker

Text on white

10.54:1

AA Pass AAA Pass

Text on black

1.99:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026